Patents by Inventor Robert C. Dunigan
Robert C. Dunigan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11673781Abstract: A fork for an industrial vehicle such as a forklift, and a method of making the same. The fork includes an elongate body portion, a toe portion, and, optionally, a heel portion. The elongate body portion may be formed in any length and coupled to the toe portion (and optionally, to the heel portion) to form a fork.Type: GrantFiled: October 25, 2021Date of Patent: June 13, 2023Assignee: HYSTER-YALE GROUP, INC.Inventor: Robert C. Dunigan
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Patent number: 11667504Abstract: A fork for an industrial vehicle such as a forklift, and a method of making the same. The fork includes an elongate body portion, a toe portion, and, optionally, a heel portion. The elongate body portion may be formed in any length and coupled to the toe portion (and optionally, to the heel portion) to form a fork.Type: GrantFiled: October 14, 2021Date of Patent: June 6, 2023Assignee: HYSTER-YALE GROUP, INC.Inventor: Robert C. Dunigan
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Publication number: 20220063972Abstract: A fork for an industrial vehicle such as a forklift, and a method of making the same. The fork includes an elongate body portion, a toe portion, and, optionally, a heel portion. The elongate body portion may be formed in any length and coupled to the toe portion (and optionally, to the heel portion) to form a fork.Type: ApplicationFiled: October 14, 2021Publication date: March 3, 2022Applicant: Hyster-Yale Group, Inc.Inventor: Robert C. Dunigan
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Publication number: 20220055878Abstract: A fork for an industrial vehicle such as a forklift, and a method of making the same. The fork includes an elongate body portion, a toe portion, and, optionally, a heel portion. The elongate body portion may be formed in any length and coupled to the toe portion (and optionally, to the heel portion) to form a fork.Type: ApplicationFiled: October 25, 2021Publication date: February 24, 2022Applicant: Hyster-Yale Group, Inc.Inventor: Robert C. DUNIGAN
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Patent number: 11235963Abstract: A fork for an industrial vehicle such as a forklift, and a method of making the same. The fork includes an elongate body portion, a toe portion, and, optionally, a heel portion. The elongate body portion may be formed in any length and coupled to the toe portion (and optionally, to the heel portion) to form a fork.Type: GrantFiled: November 21, 2018Date of Patent: February 1, 2022Assignee: HYSTER-YALE GROUP, INC.Inventor: Robert C. Dunigan
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Patent number: 11161535Abstract: A load wheel assembly for a pallet truck includes a first load arm that rotates about an axis of rotation, and a load wheel rotationally coupled to an end of the first load arm opposite from the axis of rotation. The load wheel supports a fork at an elevation above the load wheel. Additionally, the load wheel assembly includes a second load arm pivotally coupled to the first load arm at the axis of rotation and forming a load arm angle, and an adjustment mechanism further coupling the second load arm to the first load arm. The adjustment mechanism varies the load arm angle formed between the first load arm and the second load arm to adjust the elevation of the fork above the load wheel.Type: GrantFiled: April 6, 2020Date of Patent: November 2, 2021Assignee: HYSTER-YALE GROUP, INC.Inventor: Robert C. Dunigan
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Publication number: 20200231199Abstract: A load wheel assembly for a pallet truck includes a first load arm that rotates about an axis of rotation, and a load wheel rotationally coupled to an end of the first load arm opposite from the axis of rotation. The load wheel supports a fork at an elevation above the load wheel. Additionally, the load wheel assembly includes a second load arm pivotally coupled to the first load arm at the axis of rotation and forming a load arm angle, and an adjustment mechanism further coupling the second load arm to the first load arm. The adjustment mechanism varies the load arm angle formed between the first load arm and the second load arm to adjust the elevation of the fork above the load wheel.Type: ApplicationFiled: April 6, 2020Publication date: July 23, 2020Applicant: Hyster-Yale Group, Inc.Inventor: Robert C. DUNIGAN
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Publication number: 20200156911Abstract: A fork for an industrial vehicle such as a forklift, and a method of making the same. The fork includes an elongate body portion, a toe portion, and, optionally, a heel portion. The elongate body portion may be formed in any length and coupled to the toe portion (and optionally, to the heel portion) to form a fork.Type: ApplicationFiled: November 21, 2018Publication date: May 21, 2020Applicant: Hyster-Yale Group, Inc.Inventor: Robert C. Dunigan
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Patent number: 10618539Abstract: A load wheel assembly for a pallet truck includes a first load arm that rotates about an axis of rotation, and a load wheel rotationally coupled to an end of the first load arm opposite from the axis of rotation. The load wheel supports a fork at an elevation above the load wheel. Additionally, the load wheel assembly includes a second load arm pivotally coupled to the first load arm at the axis of rotation and forming a load arm angle, and an adjustment mechanism further coupling the second load arm to the first load arm. The adjustment mechanism varies the load arm angle formed between the first load arm and the second load arm to adjust the elevation of the fork above the load wheel.Type: GrantFiled: March 2, 2018Date of Patent: April 14, 2020Assignee: HYSTER-YALE GROUP, INC.Inventor: Robert C. Dunigan
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Patent number: 10549972Abstract: A battery box and fork system for a vehicle having a first fork and a second fork configured to support one or more pallets positioned along a length of the first fork and the second fork. The first fork and the second fork are each independently lockable at their heel ends to a battery box.Type: GrantFiled: November 21, 2018Date of Patent: February 4, 2020Assignee: HYSTER-YALE GROUP, INC.Inventors: Robert C. Dunigan, Kenneth Williams
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Publication number: 20180251145Abstract: A load wheel assembly for a pallet truck includes a first load arm that rotates about an axis of rotation, and a load wheel rotationally coupled to an end of the first load arm opposite from the axis of rotation. The load wheel supports a fork at an elevation above the load wheel. Additionally, the load wheel assembly includes a second load arm pivotally coupled to the first load arm at the axis of rotation and forming a load arm angle, and an adjustment mechanism further coupling the second load arm to the first load arm. The adjustment mechanism varies the load arm angle formed between the first load arm and the second load arm to adjust the elevation of the fork above the load wheel.Type: ApplicationFiled: March 2, 2018Publication date: September 6, 2018Applicant: Hyster-Yale Group, Inc.Inventor: Robert C. DUNIGAN
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Patent number: 5491373Abstract: An improved commutator anchoring system and methods of manufacturing such a system are disclosed. The system includes a wound fiberglass or other ring embedded in the internal core of the commutator to reinforce the resulting structure and enhance its thermal and mechanical stability. The reinforcing ring also functions as a form about which various anchors can be patterned, increasing their uniformity over free-form designs.Type: GrantFiled: September 7, 1994Date of Patent: February 13, 1996Assignee: The Morgan Crucible Company plcInventors: David L. Cooper, Robert C. Dunigan, Joseph M. Grenier, Eric G. Lee
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Patent number: D919165Type: GrantFiled: August 13, 2018Date of Patent: May 11, 2021Assignee: HYSTER-YALE GROUP, INC.Inventor: Robert C. Dunigan